Gaya APA
New Standard English Readers for Elementary Schools 4. (sa).
Singapore:
Children Book.
Gaya Chicago
New Standard English Readers for Elementary Schools 4.
.
Singapore:
Children Book,
sa.
Buku.
Gaya MLA
New Standard English Readers for Elementary Schools 4.
.
Singapore:
Children Book,
sa.
Buku.
Gaya Turabian
New Standard English Readers for Elementary Schools 4.
Singapore:
Children Book,
sa.
Buku.